Thermodynamic evaluation of solidification structure of high chromium white cast iron

2003 ◽  
Vol 16 (4) ◽  
pp. 435-440 ◽  
Author(s):  
K. Yamamoto ◽  
M. M. Liliac ◽  
K. Ogi
Keyword(s):  
Cast Iron ◽  
White Cast Iron ◽  
Solidification Structure ◽  
Thermodynamic Evaluation ◽  
High Chromium

A Study on the Structures and Properties of B-Bearing Cast Steel for Wear Resistance

2010 ◽  
Vol 34-35 ◽  
pp. 878-882 ◽  
Author(s):  
Zhi Qiang Jiang ◽  
Xi Lan Feng ◽  
Xian Zhang Feng
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Toughness ◽  
Grain Boundary ◽  
White Cast Iron ◽  
Cast Steel ◽  
Lath Martensite ◽  
Solidification Structure ◽  
High Chromium ◽  
Structures And Properties

The microstructures of B-bearing cast steel containing 0.8-1.2 wt.%B, 0.8-1.2 wt.%Cr, 1.0-1.5 wt.%Mn, 0.6-1.0 wt.%Si and 0.10-0.25 wt.%C have been characterized by means of optical OM, SEM, EPMA and XRD. The solidification structure of B-steel consists of pearlite, ferrite, martensite and boride (Fe2B), while the hardness is 1430-1480 HV. Borides distribute along the grain boundary in the form of eutectic. Fine lath martensite and eutectic Fe2B can be obtained by water quenching at 1223 K-1273 K. The hardness and impact toughness of the B-steel exceed 55 HRC and 150 kJ/m2, respectively. The abrasion resistance determined using a pin abrasion tester is obviously higher than that of the martensitic cast steel and nears to the high chromium white cast iron.

The influence of titanium addition on wettability of high-chromium white cast iron-matrix composites

2018 ◽  
Vol 53 (11) ◽  
pp. 1567-1576 ◽  
Author(s):  
Takalani Madzivhandila ◽  
Shepherd Bhero ◽  
Farouk Varachia
Keyword(s):  
Cast Iron ◽  
White Cast Iron ◽  
Mining Industry ◽  
Titanium Content ◽  
High Wear Resistance ◽  
Matrix Composites ◽  
Ferrous Alloys ◽  
Titanium Addition ◽  
High Chromium ◽  
Wetting Properties

The mining industry exerts ever increasing demand for components with high wear resistance to the extent that plain ferrous alloys are falling short. Innovative metal-matrix composites non-ferrous metals have been widely researched and used. Casting composites based on ferrous alloys pose monumental challenges in casting. First, the density differential results in large buoyant forces on the ceramic such that unless a rigid structure is configured, the less dense ceramic floats on the metal stream. Second, the poor wetting properties between metal and ceramic will result in inferior bonding of the matrix, hence separation of solids in service. The paper attempts to improve the bonding characteristics of zirconia and alumina through wettability studies. High-chromium white cast iron was used as a substrate. The wetting behavior of molten iron on the substrates of zirconia and alumina was investigated. The study shows that alumina is poorly wetted with copper and nickel; the wetting angles were higher than 90°. Thus, the envisaged coating of alumina with copper or nickel prior to casting of ferrous melts will not significantly alter or improve wettability of alumina. Between copper and nickel, nickel has better bonding with alumina than copper. Titanium in high-chromium white cast iron was found to improve the wetting characteristics on alumina. The wetting angle decreased with increased titanium content.

Effect of boron addition on three-body abrasive wear characteristics of high chromium based multi-component white cast iron

2022 ◽  
Vol 275 ◽  
pp. 125232
Author(s):  
Riki Hendra Purba ◽  
Kazumichi Shimizu ◽  
Kenta Kusumoto ◽  
Yila Gaqi ◽  
Takayuki Todaka
Keyword(s):  
Cast Iron ◽  
Abrasive Wear ◽  
White Cast Iron ◽  
Boron Addition ◽  
High Chromium ◽  
Wear Characteristics ◽  
Three Body

Effect of slurry concentration on erosion wear behavior of AISI 5117 steel and high-chromium white cast iron

2018 ◽  
Vol 70 (4) ◽  
pp. 628-638 ◽  
Author(s):  
Mohammed Ahmed Al-Bukhaiti ◽  
Ahmed Abouel Kasem Mohamad ◽  
Karam Mosa Emara ◽  
Shemy M. Ahmed
Keyword(s):  
Fractal Dimension ◽  
Cast Iron ◽  
Erosion Rate ◽  
Particle Concentration ◽  
White Cast Iron ◽  
Slurry Erosion ◽  
Content Type ◽  
High Chromium ◽  
Slurry Concentration ◽  
The Impact

Purpose This paper aims to investigate the influence of slurry concentration on the erosion behavior of AISI 5117 steel and high-chromium white cast iron by using a whirling-arm rig. In this study, the slurry erosion mechanism with particle concentration has been studied. Design/methodology/approach The tests were carried out with particle concentrations in the range of 1-7 Wt.%, and the impact velocity of slurry stream was 15 m/s. Silica sand with a nominal size range of 500-710 µm was used as an erodent. The study revealed that the failure mode was independent of concentration. Findings The results showed that the erosion rate decreases with the increase in particle concentration and the variation in the reduction depends on the material. It was found that the variation of fractal dimension calculated from slope of linearized power spectral density of eroded surface image for different concentrations can be used to characterize the slurry erosion intensity in a similar manner to the erosion rate. It was also found that the variation of fractal dimension versus concentration of sand has a general trend that does not depend on magnification factor. Originality/value Using the gravitational measurement and image analysis, the variation of the wear with slurry concentration has been analyzed to investigate the implicated mechanisms of erosion during the process.

Effect of Tempering on the Oxidation Resistance of a Work Roll Grade High-Chromium White Cast Iron

2013 ◽  
Vol 81 (3-4) ◽  
pp. 421-434
Author(s):  
J. H. Ramírez-Ramírez ◽  
R. Colás ◽  
N. F. Garza-Montes-de-Oca
Keyword(s):  
Cast Iron ◽  
Oxidation Resistance ◽  
White Cast Iron ◽  
Work Roll ◽  
High Chromium
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